GRIMM Aerosol Technik

Transcription

1 GRIMM Aerosol Technik Existing technologies and improvements Environmental Measurement Instruments by Eng. Wolfgang Brunnhuber General features Mobile Systems Stationary Systems WRAS Systems MAIN FEATURES ENVIRONMENTAL * 31 channel size distribution * Different measurements simultaneously * No probe heating only dehuminifiaction * No loss of Semi-Volatile compounds * Chemical specification possible #107 Portable Dust Monitor with glas bottle and filter with PTFE Filter chamber #165 Weather Housing * Includes #107 * Fiber glas case * 47mm PTFE Filter Small and portable solution for dust measurment in outdoor areas 1

2 #165 main parts DEHUMIDIFICATION EDM165 Humidity Temperature Sensor Sample Pipe Dryer Operating Principle Reserve Monitor #365 Mobile Dust Monitor Grimm Photo von Environment Canada, Ontario * Stainless steal housing * Long term measurement * 47mm PTFE Filter possible #180 stationary ambient monitor Stationary Systems EN12341 certified * Certified for PM10 according to EN12341 * 19zoll rack mount * Special NAFION dehumidification system * GESYTEC MODE for networks * Long time measurement * Very low TCO s 2

3 Sampling pipe with Nafion tube Nafion - The Perfect Drying Material Nafion is a copolymer of tetrafluoroethylene (Teflon ). Like Teflon, Nafion is highly resistant to chemical attack, but the presence of its exposed sulfonic acid groups confers unusual properties. Sulfonic acid has a very high water-of-hydration, absorbing 13 molecules of water for every sulfonic acid group in the polymer; consequently, Nafion absorbs 22% by weight of water. Unlike micro-porous membrane permeation, which transfers water through a relatively slow diffusion process, Nafion removes water by absorption as waterof-hydration. This absorption occurs as a First Order Kinetic reaction, so equilibrium is reached very quickly (typically with in milliseconds). Because this is a specific chemical reaction with water, gases being dried or processed are usually entirely unaffected. 19 Stationary Dust Monitor / Size Distribution Jorge Anjos GRIMM # 190 Aerosol Spectrometer Counts with 31 Size Channels or Fine Dust Monitor with the same specifications as the #180 #265 semi volutile compounds Data from the E-SVC *specification of the semi volutile sompounds in ambient air * Stainless steal housing * Long term measurement * 47mm PTFE Filter possible µg/m ³ E-SVC Heater: 100 C, Intervall 20 min Ein / 40 min Aus 07:13 07:39 08:05 08:31 08:57 09:23 09:49 10:15 10:41 11:07 11:33 11:59 12:25 12:51 13:17 13:43 14:09 14:35 15:01 15:27 PM PM-2.5 Heater C

4 System Integration of GRIMM ENVIRONcheck ENVIRONMENTAL DATA IN REAL TIME Installation examples of STAND-ALONE GRIMM ENVIRONcheck Mobile Systems Stationary Systems SVC Systems WRAS Systems Particle Concentration in 15at(or Channels continuous PM-10 and PM-2.5 values the31) same time with one unit 4

5 Wide Range Aerosol Spectrometer E-WRAS Combination of the size distribution from a SMPS and a Spectrometer SMPS: 3 nm nm, 44 channels Spectrometer: 0.25 µm...30 µm, 31 channels E-WRAS: Range from 3 nm to nm (30 µm) 75 different channels 19 Rack-mounted E-WRAS Sample pipe Spectrometer # CPC + DMA #565 environmental WIDE RANGE * Count distribution from 5nm up to 31µm * 72 channels * Stainless steal housing * Long term measurement Combined Size Distribution WRAS N/cm³ mittlerer WRAS DMA 180er Kanäle [nm] N/cm³ mittlerer DMA 180er Kanäle [nm] 5

6 SVC-Semi-Volatile Compounds Field Test in Austria Particles in the ambient air consist of solid and semi-volatile components. Semi-volatile compounds make up 20% to 50% of the PM2.5 Common samplers are losing semi-volatiles due to the ongoing sampling from the filter or by heating the sample probe to prevent condensation. Result: most measurements are underestimated. 6